A 286 is enough horsepower to calculate changes in flight profile. Europe has launched independent missiles (France for SLBMs and Europe at large for rockets) that need exact calculations for splashdown since the 60s. And for a nuclear weapon you just up the tonnage if you’re not super precise. Anywhere within 1 km is fine and we’ve been doing this with slide rules.

I mean honestly, it’ll take you 2 minutes with an AI to realise I’m right. Try it out.